hi
when I emit fluid using a moving object as the source, how to inherit the source velocity accurately ? the only thing i can do now is setting a vel field and apply the field to the emitted fluid but i can't get the result i want.
some tips? thanks
how to inherite the source velocity when emitting fluid
4641 6 1- spoopo
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- old_school
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- spoopo
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- spoopo
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Good you got it going. I still have a question.
No velocity at the first frame because there is no velocity at that frame calculated by the Trail SOP? Can you see if the Trail SOP is calculating v at frame 1?
There is the velocity calculation option that defaults to frame forward. Try central difference or backward to current frame and see if that can calculate v at frame 1, if that is the issue.
No velocity at the first frame because there is no velocity at that frame calculated by the Trail SOP? Can you see if the Trail SOP is calculating v at frame 1?
There is the velocity calculation option that defaults to frame forward. Try central difference or backward to current frame and see if that can calculate v at frame 1, if that is the issue.
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- spoopo
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im using $FF for the animation , with default setting of the trail sop the velocity is 0 at 1'st frame. when i change to “central difference”or “forward difference” ,i can get the velocity .
And when i uncheck the “evaluate within frame range” ,i can get the velocity as well .
thank you guys so much.
And when i uncheck the “evaluate within frame range” ,i can get the velocity as well .
thank you guys so much.
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